Born in Sarnia, Ontario on September 19th, 1963 defenseman Michael Dark was drafted by the Montreal Canadiens just prior to starting his collegiate hockey career with the RPI Engineers in 1982. After four years at Rensselaer Polytechnical Institute Dark turned pro with the St. Louis Blues organization. The Blues had acquired Dark's right along with winger Mark Hunter in a trade that saw the Canadiens and Blues exchange draft picks.

Dark played 13 games at the NHL level during the 1986-87 season and scored 2 goals. The following year Dark increased his games played to 30 and upped his output to 3 goals and 9 points while spending the rest of his time in the minors. Just before the 1988-89 training camp was to begin Dark was traded and again Mark Hunter was on the move with him. In a blockbuster deal between the Blues and the Flames Dark headed to Calgary along with Hunter, Steve Bozek and Doug Gilmour in exchange for Mike Bullard, Craig Coxe and Tim Corkery.

The change of scenery did little for Dark's career, however and he never made it back to the National Hockey League. Dark spent the 1988-89 in the Flames minor league system then headed to Britain for his final campaign, a year spent with the Peterborough Pirates. After a dominant 42 goals and 76 points in 38 games, Dark retired from hockey.